Exterior escutcheon



FIG. 1 is a front, right side perspective view of the exterior escutcheon showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines in the drawing figures depict unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a exterior escutcheon, as shown and described. 